Colloidal mill



MM2, 1937. F. G. nANE 2,072,710

COLLOIDAL MIIL Filed July 24. 1955 J7 I4 I6 112.5 a4 2 25 1a" o 0 6 7 1 e 2 s ru7 n IZ INVNTOR.'

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H/ ATTORNEY.

Patented` Mar. 2, 1937 PAT-ENT OFFICE commer. MILL Frank G. Crane, Montague, Mich., assignor to Frank G. Crane, Jr., Montague, Mich.

Application July 24, 1935, Serial No. 32,893

isfclaims.

My invention relates to colloidal. mills, and more particularly to devices for -homogenizing and/or viscolizing various materials.

In making color andh size for coating paper it is necessary to homogenize or viscolize the material by passing the samel through a valve having a restricted passage which breaks down the ma-v terial in a Well known'manner, YrA pump is used to force the material through the valve, these outts beingrelatively expensive. However costly, they are damaged by material containing grit or abrasives, as will be readily understood.

'I'he main objects of my invention are: First, -to provide a viscolizer which will handle material containing 'grit or abrasives without injury. l

A Second, to provide a homogenizer which s simple in construction and eiiicient4 in operation. Third, to provide a colloidal mill which is economical to operate, and which is capable of improving the properties of colors and the like to a remarkable degree.

I attain these objects by mechanism illustrated inthe accompanying drawing in which- The single figure is a view mainly in side elevation of my machine, parts being shown in section. Referring to the drawing, I is a supporting frame on which are mounted a drum 2 and a motor. 3 at opposite ends thereof. The motor shaft d and a shaft 5 are connected by a exible coupling 6, the shaft 5 extending through packing glands 1 and 8 in the end closure plates 9 and I0 of the drum.

The drum has an upper inlet II near one end thereof and a lower outlet I2 near the other end thereof, the latter being provided with a hand valve I3 for controlling the action of the device, as will be described below. The inlet is connected to the outlet I4 of a funnel I5 by a rubber hose coupling I5, leaving thefunnel free to be vibrated. 'I'he funnel is provided with a straining screen (not shown) of the desired mesh. The funnel is vibrated in response to the rotation ofthe shaft 5 by a crank II pivoted at I8 to thearm I9, and having its lower end provided with a follower 20 coacting with a cam 2l on the shaft 5, the upper end 22 of the crank being xed to the funnel.

The cam is removably mounted on the shaft for adjustment and for change as desired. Since the shaft 5 rotates at about 1750 R. P. M., the funnel is vibrated quite effectively.

Arranged on the shaft 5 within the drum, are

a plurality of spaced parallel'inclined disks 23 having milled or toothed edges in bearing coaction with the inner cylindrical surface 24 of the drum. The disks are held in place by spacers 25 and end nuts 26 andZ'I. Thus, the disks rotate with the shaft 5 relative to the drum, the latter constituting the stator and the former the rotor of the device.

The disks are preferably inclined about degrees relative to the axis of the shaft, and the teeth at the periphery of the disks are parallel to said axis. With this inclination of the disks, the latter are spaced about one inch apart, the internal diameter of the bore of the stator being about four inches. The drum is slightly over one foot long in the present embodiment. I'he drum and disks, as well as the other parts of the device subject to contact with the material, are preferably made of acid resisting metal, such as a bronze alloy.

The teeth of thev disks are in sliding or bearing contact with the inner surface of the drum, and are rotated at about 1750 R. P. M. relative to the latter. This machine will handle 120 gallons of color per hour, the action of the novel valves reducing the viscosity about 25%, and

making the color more bright and free owing.

This remarkable result is attained even with the color containing abrasive material, without injury to my machine; a decided improvement over the old type of valve which must be renewed at great expense and inconvenience even when the color contains a very slight amount of grit.;

The mill by its action also reduces the particle size of the color, and thoroughly mixes it,V resulting in a smooth and even coating on the paper, and one that is contiguous. This is especially good in coating for insulation purposes. My invention, however, is not limited to the treatment of color, but has a wide iield of application, including the viscolizing, homogenizing, emulsifying, mixing or like treatment of any material. In operation, the passage of the. material through the `device is controlled by adjusting the hand valve I3. Thus, the flow may be changed between maximum and minimum amounts, as desired, depending upon the nature of the material and the treatment desired. There is a natural 'tendency for the material to i'low by gravity through the machine and this tendency is augmented by the action of the disks in creating a vacuum by virtue of their peculiar position and movement in the drum.

The results attained are most remarkable, to

is not iniuriously affected by materials containing abrasives, even when the viscosity of the material is being reduced to a considerable extent by the action of the device; a thing heretofore un-` known to those skilled in the art. The advantages flowing from this feature are self evident,- the greatest being the viscolizing of materials containing abrasives, without injury to the valves., each disk coacting with the drum to provide a valve.

I claim- 1. In a machine of the class described, the combination with a supporting frame, of a drum mounted on said frame near one end thereof, a` motor mounted on said frame near the other end. thereof, the drum having end closures and an upper inlet near one end and a loweroutlet near the other end, a shaft journalled to said end 'closures and coupled to the shaft of saidmotor. a plurality ofinclined disks arranged in spaced parallel relation on said shaft within the drum and having peripheral teeth slidably coacting f with the inner surface of the drum, and a hand valve associated with said drum outlet.

2. In a machine of the class described, the combination with a supporting frame, of a drum mounted on said frame, a motor mounted on said frame, the drum having end closures and an upper inlet near one end and a lower outlet, near the other end, a shaft ,iournalled to said end closures and coupled to said motor, a plurality of inclined disks arranged in spaced parallel rela-y tion on said shaft within the drum and having peripheral teeth slidably coacting with the inner surface of the drum, and a-hand valve associated with' said drum outlet. l

3. In a machine of the class described, the combination with a supporting frame, of a drum mounted on said frame near one end thereof, a

motor mounted on said frame near the other end thereof, the drum having end closures and an upper inlet near one end and a lower outlet near the other end, a shaft journalled to said end clo-1 sures and connected to the said motor, a plurality of inclined disks arranged in spaced paral-l lel relation on said shaft within the drumand having peripheral teeth slidably coacting with the inner surface of the drum, and a valve con-v trolling said drum outlet. Y

4. In a machine ofthe class described, the

' combination with a supporting frame, of a drum mounted on saidframe, a motor mounted on saidly fraine, the drum having end closures and an up- Der inlet near one end and a lower outlet near the other end, a shaft journalled to said end closures connected to the said motor, a plurality of vinclined disks arranged in spaced parallel relation on said shaft within the drum and having drum outlet.

6. In a machine of the class described, the combination with a horizontal drum having end closures and an upper inlet'near one end and a lower outlet near the other end, of a motor driven.

shaft journalled to said end closures, aplurality of inclined disks arranged in spaced parallel relation on said shaftwithin the drum and having peripheral teeth slidably coacting with the inner surface of the drum, and a hand' valve controlplates associated with the opposite ends of said drum, a shaft journalled to said end closure plates and extending through said drum,spaced disks arranged on said shaft for rotation therewith within the drum, the disks being inclined l relative to said shaft and having peripheral teeth slidably coacting with the inner surface of the drum, and means acting to rotate said shaft and disks.

8. In a machine of the character set forth, the

combination with a horizontally disposed cylindrical drum having an inlet at one end and an outlet at the other end, of a shaft extending through said drum, spaced disks arranged on said shaft for rotation therewith within the drum, the disks being inclined relative to said shaft and having peripheral teeth .slidably coacting with the inner surface of the drum, and means acting to rotate said shaft and disks.

9. In a machine of the character set forth, the combination with a. horizontally disposed cylindrical drum having an upper inlet at one end and a lower outlet at the other end, of a shaft axially extending through said drum, and spaced disks yarranged on said shaft for rotation therewith withinthe drum, the disks being inclined relative to said shaft and having peripheral teeth parallel to the shaft in bearing coaction with the inner surface of the drum.

10. A device of the class described comprising a horizontal cylinder having end closures and an -upper inlet at onevend and a lower inlet vat the other end, and a control valve associated with said outlet, a motor driven shaft journalled to said end closures and having fixed thereon a piu--v rality of spaced parallel inclined disks provided with milled edges bearing against the inner sur face of said cylinder.

11. A device of the class described comprising ing surface in the shape of a cylinder, and the disks having milled edges in bearing engagement with said bearing surface, the disks being disposed in fixed spaced parallel relation vto each.

other, and means for rotating one of said members relative to the other, there being an upper inlet at one end of the device and a lower outlet at the other end thereof, said outlet having an adjustable valve for controlling the action of the device.

13. A device oftheclass described comprising relatively rotatable members consisting of a drum and a plurality of inclined disks arranged within the drum, the drum having a smooth inner bearingsurface in the shape of a cylinder. and the disks having milled edges in bearing engagement Y with said bearing surface, the disks being disposed in fixed spaced parallel relation to each other, and means for rotating one of said members relative to the other, there being an upper inletat one end of the device and a lower outlet at the other end thereof.

14. In a device of the character set forth, the combination with a stator having an internal cylindrical bore provided with a smooth bearing surface, of a rotor having a plurality of spaced parallel inclined imperforate disks provided with toothed edges having a bearing t with said bearing surface of the stator, there being an upper in. let at one end of said bore and a lower outlet at the other endthereof, the bore being arranged in a substantially horizontal position. i

15. In a device of the character set forth, the combination with a stator having an internal cylindrical bore provided with a smooth bearing surface, of `a rotor having a plurality of spaced parallel inclined imperforate disks provided with toothed edges having a bearing fit with said bearing surface of the stator.

16. In a machine of the class set forth, the combination with a cylindrical drum having a .smooth internal surface and closed ends, of a rotor disposed within said drum and having a plurality of spaced parallel inclined imperforate disks provided with toothed edges coacting with the internal surface of said drum, the drum being arranged with its axis substantially horizontal and having an upper inlet at one end and a lower inlet at the other end thereof.

17. In a machine of the class set forth, the combination with a cylindricaldrum' having a smooth internal surface and closjed ends, of a rotor disposed within said drum and having a plurality of spaced parallel inclined imperforate disks provided with toothed edges coacting with the internal surface of said drum.

18. A viscolizer capable of handling material containing abrasives without inJury to itself, comprising a stator having an internal cylindrical bore provided with a smooth bearing surface, a rotor having a plurality of spaced parallel inclined imperforate discs provided with toothed edges in bearing coaction with said bearing surface of the stator, there being an upper inlet at 'one end of said bore and a lower outlet at the other end thereof, the bore being arranged in a substantially horizontal position, and a valve at the outlet for controlling the ow of material through the viscolizer.

19. A viscolizer capable of handling material 

